Liverpool have made a formal request to PGMOL for the audio from Saturday's 2-1 defeat by Tottenham.
The video assistant referee failed to overturn an incorrect decision to disallow a Luis Diaz goal for offside.
PGMOL, the governing body for referees, said the decision to rule out the goal was "a significant human error".
On Sunday, the Reds released a statement saying the explanation was "unacceptable" and that "sporting integrity has been undermined".
More to follow.